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/*-
* BSD LICENSE
*
* Copyright (c) Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "spdk/stdinc.h"
#include "spdk/env.h"
#include "spdk/util.h"
#include "spdk/histogram_data.h"
/*
* This applications is a simple test app used to test the performance of
* tallying datapoints with struct spdk_histogram_data. It can be used
* to measure the effect of changes to the spdk_histogram_data implementation.
*
* There are no command line parameters currently - it just tallies
* datapoints for 10 seconds in a default-sized histogram structure and
* then prints out the number of tallies performed.
*/
static void
usage(const char *prog)
{
printf("usage: %s\n", prog);
printf("Options:\n");
}
int
main(int argc, char **argv)
{
struct spdk_histogram_data *h;
struct spdk_env_opts opts;
uint64_t tsc[128], t, end_tsc, count;
uint32_t i;
int ch;
int rc = 0;
while ((ch = getopt(argc, argv, "")) != -1) {
switch (ch) {
default:
usage(argv[0]);
return 1;
}
}
spdk_env_opts_init(&opts);
if (spdk_env_init(&opts)) {
printf("Err: Unable to initialize SPDK env\n");
return 1;
}
for (i = 0; i < SPDK_COUNTOF(tsc); i++) {
tsc[i] = spdk_get_ticks();
}
end_tsc = spdk_get_ticks() + (10 * spdk_get_ticks_hz());
count = 0;
h = spdk_histogram_data_alloc();
while (true) {
t = spdk_get_ticks();
spdk_histogram_data_tally(h, t - tsc[count % 128]);
count++;
if (t > end_tsc) {
break;
}
}
printf("count = %ju\n", count);
spdk_histogram_data_free(h);
return rc;
}
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